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                        Python高级
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                            <b>1.</b>
                        
                        Python语法高级专题1
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                            <b>1.1.</b>
                        
                        GIL问题
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                            <b>1.2.</b>
                        
                        赋值-浅拷贝-深拷贝
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                            <b>1.3.</b>
                        
                        import导入模块
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                            <b>1.4.</b>
                        
                        总结
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                            <b>2.</b>
                        
                        Python语法高级专题2
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                            <b>2.1.</b>
                        
                        多继承和MRO顺序
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                            <b>2.2.</b>
                        
                        property属性
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                            <b>2.3.</b>
                        
                        魔法属性和方法
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                            <b>2.4.</b>
                        
                        with管理上下文
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                            <b>2.5.</b>
                        
                        总结
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                            <b>3.</b>
                        
                        Python语法之装饰器
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                            <b>3.1.</b>
                        
                        闭包
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                            <b>3.2.</b>
                        
                        装饰器
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                            <b>3.3.</b>
                        
                        总结
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                            <b>4.</b>
                        
                        MySQL数据库基本操作
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                            <b>4.1.</b>
                        
                        数据库概述
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                            <b>4.2.</b>
                        
                        数据完整性
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                            <b>4.3.</b>
                        
                        图形化客户端Navicat
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                            <b>4.4.</b>
                        
                        命令行客户端SQL的使用
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                            <b>4.4.1.</b>
                        
                        登录和退出数据库
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                            <b>4.4.2.</b>
                        
                        表结构的操作
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                            <b>4.4.3.</b>
                        
                        数据库的操作
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                            <b>4.4.4.</b>
                        
                        表数据的操作
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                            <b>4.5.</b>
                        
                        知识总结
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                            <b>5.</b>
                        
                        MYSQL数据库进阶操作
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                            <b>5.1.</b>
                        
                        练习强化
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                            <b>5.2.</b>
                        
                        条件
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                            <b>5.3.</b>
                        
                        排序
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                            <b>5.4.</b>
                        
                        分页
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                            <b>5.5.</b>
                        
                        聚合函数
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                            <b>5.6.</b>
                        
                        分组
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                            <b>5.7.</b>
                        
                        连接
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                            <b>5.8.</b>
                        
                        自连接
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        <li class="chapter " data-level="5.9" data-path="day15/09.子查询.html">
            
                
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                            <b>5.9.</b>
                        
                        子查询
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                            <b>5.10.</b>
                        
                        总结
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                            <b>6.</b>
                        
                        MYSQL数据库编程
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                            <b>6.1.</b>
                        
                        数据准备
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                            <b>6.2.</b>
                        
                        SQL演练
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                            <b>6.3.</b>
                        
                        数据库设计
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                            <b>6.4.</b>
                        
                        数据库编程
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                            <b>6.5.</b>
                        
                        总结
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                            <b>7.</b>
                        
                        MySQL数据库高级用法
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                            <b>7.1.</b>
                        
                        视图
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                            <b>7.2.</b>
                        
                        事务
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                            <b>7.3.</b>
                        
                        索引
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                            <b>7.4.</b>
                        
                        用户管理
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                            <b>7.5.</b>
                        
                        主从配置
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                            <b>7.6.</b>
                        
                        总结
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                            <b>8.</b>
                        
                        miniweb框架
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                            <b>8.1.</b>
                        
                        框架概念
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                            <b>8.2.</b>
                        
                        实现一个简单的框架
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                            <b>8.3.</b>
                        
                        模板替换
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                            <b>8.4.</b>
                        
                        路由概念
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                            <b>8.5.</b>
                        
                        股票收藏夹
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                            <b>8.6.</b>
                        
                        复习
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<li>&#x80FD;&#x591F;&#x8BF4;&#x51FA;&#x51FD;&#x6570;&#x540D;&#x8D4B;&#x503C;&#x7ED9;&#x4E00;&#x4E2A;&#x53D8;&#x91CF;&#x7684;&#x4F5C;&#x7528;</li>
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<pre><code class="lang-python"><span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">test1</span><span class="hljs-params">()</span>:</span>
    print(<span class="hljs-string">&quot;--- in test1 func----&quot;</span>)

<span class="hljs-comment"># &#x8C03;&#x7528;&#x51FD;&#x6570;</span>
test1()

<span class="hljs-comment"># &#x5F15;&#x7528;&#x51FD;&#x6570;</span>
ret = test1

print(id(ret))
print(id(test1))

<span class="hljs-comment">#&#x901A;&#x8FC7;&#x5F15;&#x7528;&#x8C03;&#x7528;&#x51FD;&#x6570;</span>
ret()
</code></pre>
<p>&#x8FD0;&#x884C;&#x7ED3;&#x679C;:</p>
<pre><code class="lang-python">--- <span class="hljs-keyword">in</span> test1 func----
<span class="hljs-number">140212571149040</span>
<span class="hljs-number">140212571149040</span>
--- <span class="hljs-keyword">in</span> test1 func----
</code></pre>
<blockquote>
<p>&#x7531;&#x4E0A;&#x56FE;&#x53EF;&#x77E5;&#xFF0C;&#x548C;&#x53D8;&#x91CF;&#x540D;&#x4E00;&#x6837;&#x7684;&#xFF0C;<strong>&#x51FD;&#x6570;&#x540D;&#x53EA;&#x662F;&#x51FD;&#x6570;&#x4EE3;&#x7801;&#x7A7A;&#x95F4;&#x7684;&#x5F15;&#x7528;&#xFF0C;&#x5F53;&#x51FD;&#x6570;&#x540D;&#x8D4B;&#x503C;&#x7ED9;&#x4E00;&#x4E2A;&#x5BF9;&#x8C61;&#x7684;&#x65F6;&#x5019; &#x5C31;&#x662F;&#x5F15;&#x7528;&#x4F20;&#x9012;</strong>&#x3002;</p>
</blockquote>
<h2 id="13-&#x95ED;&#x5305;">1.3 &#x95ED;&#x5305;</h2>
<pre><code class="lang-python"><span class="hljs-comment"># &#x5B9A;&#x4E49;&#x4E00;&#x4E2A;&#x51FD;&#x6570;</span>
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">test</span><span class="hljs-params">(number)</span>:</span>

    <span class="hljs-comment"># &#x5728;&#x51FD;&#x6570;&#x5185;&#x90E8;&#x518D;&#x5B9A;&#x4E49;&#x4E00;&#x4E2A;&#x51FD;&#x6570;&#xFF0C;&#x5E76;&#x4E14;&#x8FD9;&#x4E2A;&#x51FD;&#x6570;&#x7528;&#x5230;&#x4E86;&#x5916;&#x8FB9;&#x51FD;&#x6570;&#x7684;&#x53D8;&#x91CF;&#xFF0C;&#x90A3;&#x4E48;&#x5C06;&#x8FD9;&#x4E2A;&#x51FD;&#x6570;&#x4EE5;&#x53CA;&#x7528;&#x5230;&#x7684;&#x4E00;&#x4E9B;&#x53D8;&#x91CF;&#x79F0;&#x4E4B;&#x4E3A;&#x95ED;&#x5305;</span>
    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">test_in</span><span class="hljs-params">(number_in)</span>:</span>
        print(<span class="hljs-string">&quot;in test_in &#x51FD;&#x6570;, number_in is %d&quot;</span> % number_in)
        <span class="hljs-keyword">return</span> number+number_in
    <span class="hljs-comment"># &#x5176;&#x5B9E;&#x8FD9;&#x91CC;&#x8FD4;&#x56DE;&#x7684;&#x5C31;&#x662F;&#x95ED;&#x5305;&#x7684;&#x7ED3;&#x679C;</span>
    <span class="hljs-keyword">return</span> test_in


<span class="hljs-comment"># &#x7ED9;test&#x51FD;&#x6570;&#x8D4B;&#x503C;&#xFF0C;&#x8FD9;&#x4E2A;20&#x5C31;&#x662F;&#x7ED9;&#x53C2;&#x6570;number</span>
ret = test(<span class="hljs-number">20</span>)

<span class="hljs-comment"># &#x6CE8;&#x610F;&#x8FD9;&#x91CC;&#x7684;100&#x5176;&#x5B9E;&#x7ED9;&#x53C2;&#x6570;number_in</span>
print(ret(<span class="hljs-number">100</span>))

<span class="hljs-comment">#&#x6CE8; &#x610F;&#x8FD9;&#x91CC;&#x7684;200&#x5176;&#x5B9E;&#x7ED9;&#x53C2;&#x6570;number_in</span>
print(ret(<span class="hljs-number">200</span>))
</code></pre>
<p>&#x8FD0;&#x884C;&#x7ED3;&#x679C;&#xFF1A;</p>
<pre><code class="lang-python">
<span class="hljs-keyword">in</span> test_in &#x51FD;&#x6570;, number_in <span class="hljs-keyword">is</span> <span class="hljs-number">100</span>
<span class="hljs-number">120</span>

<span class="hljs-keyword">in</span> test_in &#x51FD;&#x6570;, number_in <span class="hljs-keyword">is</span> <span class="hljs-number">200</span>
<span class="hljs-number">220</span>
</code></pre>
<h2 id="14-&#x770B;&#x4E00;&#x4E2A;&#x95ED;&#x5305;&#x7684;&#x5B9E;&#x9645;&#x4F8B;&#x5B50;&#xFF1A;">1.4 &#x770B;&#x4E00;&#x4E2A;&#x95ED;&#x5305;&#x7684;&#x5B9E;&#x9645;&#x4F8B;&#x5B50;&#xFF1A;</h2>
<pre><code class="lang-python"><span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">line_conf</span><span class="hljs-params">(a, b)</span>:</span>
    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">line</span><span class="hljs-params">(x)</span>:</span>
        <span class="hljs-keyword">return</span> a*x + b
    <span class="hljs-keyword">return</span> line

line1 = line_conf(<span class="hljs-number">1</span>, <span class="hljs-number">1</span>)
line2 = line_conf(<span class="hljs-number">4</span>, <span class="hljs-number">5</span>)
print(line1(<span class="hljs-number">5</span>))
print(line2(<span class="hljs-number">5</span>))
</code></pre>
<p>&#x8FD9;&#x4E2A;&#x4F8B;&#x5B50;&#x4E2D;&#xFF0C;&#x51FD;&#x6570;line&#x4E0E;&#x53D8;&#x91CF;a,b&#x6784;&#x6210;&#x95ED;&#x5305;&#x3002;&#x5728;&#x521B;&#x5EFA;&#x95ED;&#x5305;&#x7684;&#x65F6;&#x5019;&#xFF0C;&#x6211;&#x4EEC;&#x901A;&#x8FC7;line_conf&#x7684;&#x53C2;&#x6570;a,b&#x8BF4;&#x660E;&#x4E86;&#x8FD9;&#x4E24;&#x4E2A;&#x53D8;&#x91CF;&#x7684;&#x53D6;&#x503C;&#xFF0C;&#x8FD9;&#x6837;&#xFF0C;&#x6211;&#x4EEC;&#x5C31;&#x786E;&#x5B9A;&#x4E86;&#x51FD;&#x6570;&#x7684;&#x6700;&#x7EC8;&#x5F62;&#x5F0F;(y = x + 1&#x548C;y = 4x + 5)&#x3002;&#x6211;&#x4EEC;&#x53EA;&#x9700;&#x8981;&#x53D8;&#x6362;&#x53C2;&#x6570;a,b&#xFF0C;&#x5C31;&#x53EF;&#x4EE5;&#x83B7;&#x5F97;&#x4E0D;&#x540C;&#x7684;&#x76F4;&#x7EBF;&#x8868;&#x8FBE;&#x51FD;&#x6570;&#x3002;&#x7531;&#x6B64;&#xFF0C;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x770B;&#x5230;&#xFF0C;&#x95ED;&#x5305;&#x4E5F;&#x5177;&#x6709;&#x63D0;&#x9AD8;&#x4EE3;&#x7801;&#x53EF;&#x590D;&#x7528;&#x6027;&#x7684;&#x4F5C;&#x7528;&#x3002;</p>
<p>&#x5982;&#x679C;&#x6CA1;&#x6709;&#x95ED;&#x5305;&#xFF0C;&#x6211;&#x4EEC;&#x9700;&#x8981;&#x6BCF;&#x6B21;&#x521B;&#x5EFA;&#x76F4;&#x7EBF;&#x51FD;&#x6570;&#x7684;&#x65F6;&#x5019;&#x540C;&#x65F6;&#x8BF4;&#x660E;a,b,x&#x3002;&#x8FD9;&#x6837;&#xFF0C;&#x6211;&#x4EEC;&#x5C31;&#x9700;&#x8981;&#x66F4;&#x591A;&#x7684;&#x53C2;&#x6570;&#x4F20;&#x9012;&#xFF0C;&#x4E5F;&#x51CF;&#x5C11;&#x4E86;&#x4EE3;&#x7801;&#x7684;&#x53EF;&#x79FB;&#x690D;&#x6027;&#x3002;</p>
<p>&#x6CE8;&#x610F;&#x70B9;:</p>
<p>&#x7531;&#x4E8E;&#x95ED;&#x5305;&#x5F15;&#x7528;&#x4E86;&#x5916;&#x90E8;&#x51FD;&#x6570;&#x7684;&#x5C40;&#x90E8;&#x53D8;&#x91CF;&#xFF0C;&#x5219;&#x5916;&#x90E8;&#x51FD;&#x6570;&#x7684;&#x5C40;&#x90E8;&#x53D8;&#x91CF;&#x6CA1;&#x6709;&#x53CA;&#x65F6;&#x91CA;&#x653E;&#xFF0C;&#x6D88;&#x8017;&#x5185;&#x5B58;</p>
<h2 id="15-&#x4FEE;&#x6539;&#x5916;&#x90E8;&#x51FD;&#x6570;&#x4E2D;&#x7684;&#x53D8;&#x91CF;&#x4E86;&#x89E3;">1.5 &#x4FEE;&#x6539;&#x5916;&#x90E8;&#x51FD;&#x6570;&#x4E2D;&#x7684;&#x53D8;&#x91CF;-&#x4E86;&#x89E3;</h2>
<h4 id="python3&#x7684;&#x65B9;&#x6CD5;">python3&#x7684;&#x65B9;&#x6CD5;</h4>
<pre><code class="lang-python"><span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">counter</span><span class="hljs-params">(start=<span class="hljs-number">0</span>)</span>:</span>
    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">incr</span><span class="hljs-params">()</span>:</span>
        <span class="hljs-keyword">nonlocal</span> start
        start += <span class="hljs-number">1</span>
        <span class="hljs-keyword">return</span> start
    <span class="hljs-keyword">return</span> incr

c1 = counter(<span class="hljs-number">5</span>)
print(c1())
print(c1())

c2 = counter(<span class="hljs-number">50</span>)
print(c2())
print(c2())

print(c1())
print(c1())

print(c2())
print(c2())
</code></pre>
<h4 id="python2&#x7684;&#x65B9;&#x6CD5;">python2&#x7684;&#x65B9;&#x6CD5;</h4>
<pre><code class="lang-python">
<span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">counter</span><span class="hljs-params">(start=<span class="hljs-number">0</span>)</span>:</span>
    count=[start]
    <span class="hljs-function"><span class="hljs-keyword">def</span> <span class="hljs-title">incr</span><span class="hljs-params">()</span>:</span>
        count[<span class="hljs-number">0</span>] += <span class="hljs-number">1</span>
        <span class="hljs-keyword">return</span> count[<span class="hljs-number">0</span>]
    <span class="hljs-keyword">return</span> incr

c1 = closeure.counter(<span class="hljs-number">5</span>)
print(c1())  <span class="hljs-comment"># 6</span>
print(c1())  <span class="hljs-comment"># 7</span>

c2 = closeure.counter(<span class="hljs-number">100</span>)
print(c2())  <span class="hljs-comment"># 101</span>
print(c2())  <span class="hljs-comment"># 102</span>
</code></pre>
<h3 id="16-&#x603B;&#x7ED3;">1.6 &#x603B;&#x7ED3;</h3>
<ul>
<li>&#x51FD;&#x6570;&#x540D;&#x53EA;&#x662F;&#x51FD;&#x6570;&#x4EE3;&#x7801;&#x7A7A;&#x95F4;&#x7684;&#x5F15;&#x7528;&#xFF0C;&#x5F53;&#x51FD;&#x6570;&#x540D;&#x8D4B;&#x503C;&#x7ED9;&#x4E00;&#x4E2A;&#x5BF9;&#x8C61;&#x7684;&#x65F6;&#x5019; &#x5C31;&#x662F;&#x5F15;&#x7528;&#x4F20;&#x9012;</li>
<li>&#x95ED;&#x5305;&#x5C31;&#x662F;&#x4E00;&#x4E2A;&#x5D4C;&#x5957;&#x5B9A;&#x4E49;&#x7684;&#x51FD;&#x6570;&#xFF0C;&#x5728;&#x5916;&#x5C42;&#x8FD0;&#x884C;&#x65F6;&#x624D;&#x5F00;&#x59CB;&#x5185;&#x5C42;&#x51FD;&#x6570;&#x7684;&#x5B9A;&#x4E49;&#xFF0C;&#x7136;&#x540E;&#x5C06;&#x5185;&#x90E8;&#x51FD;&#x6570;&#x7684;&#x5F15;&#x7528;&#x4F20;&#x9012;&#x51FD;&#x6570;&#x5916;&#x7684;&#x5BF9;&#x8C61;</li>
<li>&#x5185;&#x90E8;&#x51FD;&#x6570;&#x548C;&#x4F7F;&#x7528;&#x7684;&#x5916;&#x90E8;&#x51FD;&#x6570;&#x63D0;&#x4F9B;&#x7684;&#x53D8;&#x91CF;&#x6784;&#x6210;&#x7684;&#x6574;&#x4F53;&#x79F0;&#x4E3A;&#x95ED;&#x5305;</li>
</ul>
<h3 id="17-&#x770B;&#x4EE3;&#x7801;&#x8BF4;&#x7ED3;&#x679C;">1.7 &#x770B;&#x4EE3;&#x7801;&#x8BF4;&#x7ED3;&#x679C;</h3>
<p><img src="imgs/00-&#x5206;&#x6790;&#x4EE3;&#x7801;&#x4F5C;&#x7528;.png" alt=""></p>

                    
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